b2ParticleAssembly.cpp 1.5 KB

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  1. /*
  2. * Copyright (c) 2013 Google, Inc.
  3. *
  4. * This software is provided 'as-is', without any express or implied
  5. * warranty. In no event will the authors be held liable for any damages
  6. * arising from the use of this software.
  7. * Permission is granted to anyone to use this software for any purpose,
  8. * including commercial applications, and to alter it and redistribute it
  9. * freely, subject to the following restrictions:
  10. * 1. The origin of this software must not be misrepresented; you must not
  11. * claim that you wrote the original software. If you use this software
  12. * in a product, an acknowledgment in the product documentation would be
  13. * appreciated but is not required.
  14. * 2. Altered source versions must be plainly marked as such, and must not be
  15. * misrepresented as being the original software.
  16. * 3. This notice may not be removed or altered from any source distribution.
  17. */
  18. #include <Box2D/Particle/b2ParticleAssembly.h>
  19. #include <Box2D/Particle/b2ParticleSystem.h>
  20. extern "C" {
  21. // Helper function, called from assembly routine.
  22. void GrowParticleContactBuffer(
  23. b2GrowableBuffer<b2ParticleContact>& contacts)
  24. {
  25. // Set contacts.count = capacity instead of count because there are
  26. // items past the end of the array waiting to be post-processed.
  27. // We must maintain the entire contacts array.
  28. // TODO: It would be better to have the items awaiting post-processing
  29. // in their own array on the stack.
  30. contacts.SetCount(contacts.GetCapacity());
  31. contacts.Grow();
  32. }
  33. } // extern "C"